The guys in my pic, from left to right are Kip Dynamite, Napoleon Dynamite, and Uncle Rico. I guess I'm more Uncle Rico than anyone else. But in all seriousness...
I think James is right on with the B100 suggestion. The Arros are great speakers. They're honestly one of my favorite speakers, regardless of price. The Arros are an odd speaker in that they need very stable power, as they're a difficult load, but they're somewhat easily overdriven by too much power. It's not easy finding an amp that'll be stable into difficult loads, yet not be monstrous in power. The B100 is the perfect match IMO. I've heard stronger amps overdrive the Arros, and it's not a good thing. The woofer hits the basket and makes an odd sound. Dealers say it's not going to damage the speaker due to design, but I'd still be careful.
I don't think the BP-16 and 2B SST are much better than the B100, if they're truly better at all. Certainly not worth the extra cash IMO, but everyone's finances are different.
I think the B60 also does a great job with the Arros, but the B100 does it better. The price justifies the difference IMO.
If you're hung up on seperates, I think a speaker change is in order. Move up to Totems that can handle the extra power, or a different brand that can. The Arros are an odd speaker. I love them, but they've got their quirks, hence why I don't own them.
There are other brands that'll pair up well with them, I just prefer Bryston with them over anything else I've heard. That's not a brand loyalty thing, just a synergy thing to my ears.